Radio Design Lab, RDL, Circuit Modules

The ST-DA3 gives you the advantages of an audio distribution amplifier PLUS you can put it where you need it. The ST-DA3 allows bridging of any audio line, adjusting the gain, and driving either high or low impedance, balanced or ...

The STD series of products is part of the STICK-ON line of products from Radio Design Labs. It is a resistive branching network with RF filtering on each of the four channels. Any channel, A through D, may be either an input or an output. ...

Audio Isolation TransformerFeatures: Studio Quality Bifilar Audio Transformer Terminal Block Transformer Connections Galvanic Isolation with 1:1 Transformer Coupling Transformer to Drive 600 Ohm Line Convenience of RDL® TXs™ ...

The TX-LM2 is part of the group of versatile TX series products from Radio Design Labs. The TX series feature the advanced circuitry for which RDL products are known, combined with durable, quality connectors. The ultra-compact TX series ...

The STD series of products is part of the STICK-ON line of products from Radio Design Labs. It is a resistive branching network with RF filtering on each of the four channels. Any channel, A through D, may be either an input or an output. ...

The ST-MX3 is part of a group of products in the STICK-ON series from Radio Design Labs. The durable bottom adhesive permits quick, permanent mounting nearly anywhere, or use it with RDL's racking accessories. The ST-MX3 gives you the ...

The STA-1 is a dual-channel line amplifier with bridging inputs, adjustable gain or loss, and low impedance outputs. Each of the two identical circuits are both an electronic line transformer and a line amplifier. Hook up the STA-1 just ...

The ST-GCA3 constantly adjusts for changes in input levels, bringing up low levels, and reducing gain for high levels. The audio level is constantly adjusted to maintain the correct output. The AGC adjustment rate is switch-selectable. ...

The STM-2 is a quality low-noise microphone preamplifier designed for use in commercial sound, broadcast, and recording. The STM-2 is very flexible, with gain adjustment from off to +65 dB, two balanced or unbalanced outputs, and available ...

The TX-1W is part of the group of versatile TX series products from Radio Design Labs. The TX series feature the advanced circuitry for which RDL products are known, combined with durable, quality connectors. The ultra-compact TX series ...

The STM-3 is part of the group of "STICK-ON" products from Radio Design Labs. The STM-3 is a quality microphone preamplifier designed for use in commercial sound, broadcast, and recording applications. Its compact size makes it ideally ...

The STM-DA3 is designed for use in quality commercial sound, broadcast and recording applications. The 1.2 kOhm balanced input accepts a wide variety of microphone input levels without loading professional low impedance microphones. A ...

Radio Design Labs' D-J2 is a complete unbalanced audio input panel assembly.  The front panel features two phono jacks intended for mono or stereo consumer level sources.  LEFT and RIGHT are combined and balanced through audio ...

The STA-2A is a dual-channel, line-level audio preamplifier. Each channel is identical. The audio inputs are bridged at 20 kW and accept either an unbalanced or a balanced audio signal. Gain is adjustable from unity gain to +24 dB using a ...

The ST-UMX3 is a three-channel audio mixer for combining mic-level or line-level signals to a single output. A MIC / LINE switch is provided for each input. A separate MIC / LINE switch selects the output level. Each input features a ...

The DRA-35T provides mounting for any RDL® TX or MAX TX module to a DIN rail. The unique design allows mounting TX modules in a rack, cabinet or anywhere else DIN rail mounting of TX modules is desired.

The ST-VP2 can be wired into any line-level input of a paging amplifier. A line-level music source may be provided from a receiver, satellite decoder, tape or CD source. A line-level voice source may be provided from a telephone paging ...

The ST-LCR1 Logic Controlled Relay is part of the group of products in the STICK-ON series by Radio Design Labs. These products are designed for quick, convenient installation, and reliable operation with a variety of control input ...

The ST-MPA2 contains two identical phantom power circuits and a common power supply input. If only one mic input is to be converted for phantom operation, only one circuit needs to be used. Each circuit has a mic input and a mic output. ...

The STP-1 is part of a group of products in the STICK-ON series, designed by Radio Design Labs. The durable bottom adhesive permits quick, permanent or removable mounting nearly anywhere or it may be used with RDL’s racking ...